CN102587216A - Anti-counterfeiting paper integrating bright-layer white watermark with windowing safety line and preparation method thereof - Google Patents

Anti-counterfeiting paper integrating bright-layer white watermark with windowing safety line and preparation method thereof Download PDF

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Publication number
CN102587216A
CN102587216A CN201210061865XA CN201210061865A CN102587216A CN 102587216 A CN102587216 A CN 102587216A CN 201210061865X A CN201210061865X A CN 201210061865XA CN 201210061865 A CN201210061865 A CN 201210061865A CN 102587216 A CN102587216 A CN 102587216A
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China
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safety line
paper
boiled water
plain boiled
bright layer
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CN201210061865XA
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CN102587216B (en
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张连祥
莫广付
李新民
李华
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BAODING BANKNOTE PAPER Co Ltd
China Banknote Printing and Minting Corp
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BAODING BANKNOTE PAPER Co Ltd
China Banknote Printing and Minting Corp
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Priority to CN201210061865.XA priority Critical patent/CN102587216B/en
Publication of CN102587216A publication Critical patent/CN102587216A/en
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Publication of CN102587216B publication Critical patent/CN102587216B/en
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Abstract

The invention relates to anti-counterfeiting paper integrating a bright-layer white watermark with a windowing safety line and a preparation method thereof. The anti-counterfeiting paper is provided with the bright-layer white watermark and the safety line, which are mutually overlapped; and the safety line forms a windowing effect. The preparation method of the anti-counterfeiting paper comprises the following steps of: preparing a watermark template according to a pattern of the bright-layer white watermark; welding or sticking the watermark template on a watermark net to prepare a net sleeve; tensioning the net sleeve on a circular net cage; putting the circular net cage on a paper machine to carry out paper making, wherein the safety line is applied to a pre-set region in a windowing way in the process of paper making, so that the safety line and the bright-layer white watermark are overlapped to obtain the anti-counterfeiting paper. The anti-counterfeiting paper provided by the invention has the advantages that two different wonderful windowing effects that the safety line passes through the bright-layer white watermark and the safety line covers the bright-layer white watermark are realized; the anti-counterfeiting paper is made complicatedly, is novel and attractive, and the authenticity of the paper can be distinguish easily by common people, so that the anti-counterfeiting paper has a very strong front-line anti-counterfeiting function.

Description

Cheque paper that a kind of bright layer plain boiled water seal and opened window safety line are integrated and preparation method thereof
Technical field
The present invention relates to a kind of cheque paper and preparation method thereof, relate in particular to integrated cheque paper of a kind of bright layer plain boiled water seal and opened window safety line and preparation method thereof, belong to the anti-forge paper preparing technical field.
Background technology
In existing paper false proof technical field, watermark is the most frequently used false proof means, because it is prone to identification, the difficult forgery.Use till today in decades, but along with the technological raising day by day of faking, multiple watermark all is faced with acid test always, simultaneously,, therefore needs constantly to innovate, grasp up-to-date anti-counterfeiting technology because counterfeit money is a kind of regular threat.
Safety line is cheque paper false proof measure commonly used, and wherein, safety line is to be embedded in the paper with strips.Safety line, opened window safety line in 1984 have at first buried since technological the appearance in application on the banknote entirely in Britain from nineteen forty-three, and safety line (safety belt, tamper-proof strip) becomes the false proof a kind of important form of bank-note paper, and this mode and dispensing mode thereof in the industry cycle are known.In existing bank note, safety line is directly to be applied in the bank-note paper, and the thickness at dispensing safety line position will exceed than other zones; This can influence the printing effect of bank-note paper; And when the more bank note that has safety line was stacked together, the protruding effect at the position of dispensing safety line was more obvious, caused wearing and tearing, scratch to safety line easily; Cause peeling off of safety line to be provided with and come off, this can influence the antifalse effect that has a strong impact on safety line.
Watermark and safety line all have the antifalse effect that is easy to discern; Has good antiforge function; Be to use one of the most general false proof means of a line, at present, existed above-mentioned two kinds of cheque papers that false proof means combine; This cheque paper is to prepare watermark through the mode of pressing net, then safety line is realized the effect of windowing alternately through the sag and swell of watermark.Other zones that will be higher than paper through the ulking thickness of pressing the formed watermark region paper pulp fiber of netting of mode; Will inevitably make this watermark region thicker in the watermark region safety line that superposes again; This can aggravate to influence printing owing to what safety line protrusion paper brought, and the safety line problem that is worn easily, scratches and peel off or come off.
Therefore; Seek a kind of suitable means; Safety line and watermark can be mutually combined realize good antiforge function, embodies good antifalse effect, paper is protruded at the position of avoiding discharging safety line simultaneously again and the defective brought is one of this area problem demanding prompt solution.
Summary of the invention
For solving the problems of the technologies described above; The object of the present invention is to provide a kind of cheque paper, it is that a kind of that bright layer plain boiled water seal and opened window safety line through mutual superposition is set in cheque paper obtains has good antifalse effect, is easy to the popular higher anti-fraud functional cheque paper of a line of discerning, have.
The present invention also aims to provide the preparation method of above-mentioned cheque paper.
For achieving the above object, the present invention at first provides a kind of bright layer plain boiled water seal and the integrated cheque paper of opened window safety line, and wherein, this cheque paper has the bright layer plain boiled water seal and the safety line of mutual superposition, and safety line forms the effect of windowing.
According to concrete technical scheme of the present invention, preferably, in above-mentioned cheque paper, safety line can be narrower than the pattern of bright layer plain boiled water seal, and safety line is passed from the pattern of bright layer plain boiled water seal; Safety line also can be wider than the pattern of bright layer plain boiled water seal, and safety line covers the pattern of bright layer plain boiled water seal, and promptly the bright layer white watermark pattern in the cheque paper is positioned within the zone that is provided with safety line.
In cheque paper provided by the invention; The stack of bright layer plain boiled water seal and safety line is meant that safety line is arranged on the bright layer plain boiled water seal zone in the cheque paper; In cheque paper, can see bright layer plain boiled water seal; In the pattern of bright layer plain boiled water seal, be interspersed with safety line simultaneously, perhaps, the pattern of bright layer plain boiled water seal all is apparent within the safety line institute region covered.
According to concrete technical scheme of the present invention; Preferably; The effect of windowing of safety line is to form as the version of windowing through the watermark matrix with bright layer plain boiled water seal, in the process of manufacturing paper with pulp, safety line is arranged on the watermark matrix place of bright layer plain boiled water seal in other words conj.or perhaps; The watermark matrix is played window the effect of version, thereby obtain the effect of windowing of safety line.In traditional safety line set-up mode, the effect of windowing is all through pressing net to realize, still to the watermark cylinder mould; The effect of windowing that is obtained like this is undesirable, and the marginal portion is all clear inadequately, in the present invention; Carry out manufacturing paper with pulp of paper with the watermark matrix of the bright layer plain boiled water seal version (version of windowing is meant the plate that is welded on the cylinder mould) that is used as windowing; When the dispensing safety line, safety line can be discharged the part that on cylinder mould, has the watermark matrix, realizes that the stack of bright layer plain boiled water seal and safety line is compound.In the cheque paper that obtains of manufacturing paper with pulp, the zone at the position that the watermark matrix contacts with safety line in corresponding the process of manufacturing paper with pulp, safety line is windowed and is manifested, and does not have the zone that contacts at the two, and safety line is imbedded paper inside.When safety line is narrower than the pattern of bright layer plain boiled water seal; Windowing, what display is the part of safety line; When safety line is wider than the pattern of bright layer plain boiled water seal; The window of windowing is the pattern of bright layer plain boiled water seal, windows that what display is the part in the safety line, and this part embodies the pattern form of bright layer plain boiled water seal.In the present invention, the watermark matrix welds or is bonded on the cylinder mould, obtains the effect of windowing with this; The marginal portion of windowing is more clear; Corner angle are clearly demarcated, in practical application, can play good visual effect and antifalse effect, are significantly improved than the existing mode of windowing.
In cheque paper provided by the present invention, bright layer plain boiled water is imprinted under the very little situation of pattern, still can keep very high definition.
In the paper of routine, safety line can be protruded and be higher than paper, and in the time of will having the pilling paper sheets of safety line in this case, the part that has safety line can be apparently higher than other parts of paper.In cheque paper provided by the invention; Bright layer plain boiled water seal and safety line mutual superposition will be lower than other zones owing to have the zone of bright layer plain boiled water seal in the paper, therefore; Safety line can not protruded paper; Thus obtained cheque paper is more smooth with respect to the existing cheque paper that has a safety line, helps the storage of cheque paper, and has better printing adaptability.According to concrete technical scheme of the present invention, preferably, in above-mentioned cheque paper, the thickness that is provided with the zone of safety line and bright layer plain boiled water seal is no more than the thickness of this cheque paper.
The present invention also provides the preparation method of the integrated cheque paper of above-mentioned bright layer plain boiled water seal and opened window safety line, and it may further comprise the steps:
Pattern according to bright layer plain boiled water seal makes the watermark matrix;
With watermark matrix welding or to be bonded in watermark online, make net;
With the net tensioner on rotary screen cage; Rotary screen cage is placed on the paper machine manufactures paper with pulp, in the process of manufacturing paper with pulp, safety line is applied to presumptive area with the mode of windowing; Safety line and bright layer plain boiled water seal are superimposed, prepare the cheque paper that contains bright layer plain boiled water seal and safety line.
In above-mentioned manufacturing approach provided by the invention, preferably, the watermark matrix that is adopted is sheet metal and/or wire netting sheet, and more preferably, above-mentioned sheet metal and wire netting sheet are processed by copper or stainless steel etc.
In above-mentioned manufacturing approach provided by the invention, preferably, the mesh of wire netting sheet is the 8-90 order.
In above-mentioned manufacturing approach provided by the invention, preferably, the width of wire netting sheet is 1-29mm.
In above-mentioned manufacturing approach provided by the invention, preferably, safety line is dispensing is provided with the watermark matrix on net zone.
The preparation method of cheque paper provided by the present invention preferably can carry out according to following concrete steps:
On the veil with the metal matrix of processing watermark recovery shapes such as numeral, pattern and/or the rotary screen cage that the wire netting sheet is welded on cylinder mould machine, rotary screen cage is placed in the cylinder vat of paper machine, copies paper; Cylinder mould soaks in the net groove and turns round; On wire side, discharge safety line, because the liquid level difference of the inside and outside liquid level of net, materials such as the fiber in the slurry deposit on the wire side of cylinder mould because of filtration; Revolution along with cylinder mould; Fiber constantly deposits on the wire side that gets into slurry, and the watermark recovery and the safety line of the metal matrix on the wire side, the combination of wire netting sheet are just covered by fiber, make fiber become the integrated article of different watermark of thickness and safety line; When the endless felt of fibrage through the couch roll of cylinder mould top, form continuous wet watermark paper web; Promptly have the bright layer plain boiled water seal that metal matrix, wire netting sheet form and the integrated paper web of safety line,, process final bright layer plain boiled water seal and the superimposed cheque paper of safety line through super-dry again through obtaining the paper that is shaped after the dehydration.
Cheque paper provided by the present invention has adopted the anti-counterfeiting technology of the superimposed effect of windowing of bright layer plain boiled water seal and safety line; Realized that safety line is passed in the middle of the bright layer plain boiled water seal and safety line contains two kinds of different marvellous effects of windowing of bright layer plain boiled water seal; Make complicated; Novel and beautiful is easy to masses and distinguish true from false, and has a very strong line antiforge function.Through bright layer plain boiled water seal and safety line are made novelty to this integrated technology, design ingenious.Cheque paper provided by the present invention can be applied on the counterfeit prevention paper of departments such as banknote, bank, industry and commerce, the tax, customs, has the vast market Application Areas, for the market competitiveness that improves enterprise, stablizes national financial civil order and has positive effect.
Description of drawings
Following accompanying drawing only is intended to the present invention is done schematic illustration and explanation, not delimit the scope of the invention.Wherein:
The Overlay sketch map of safety line and bright layer plain boiled water seal in the cheque paper that Fig. 1 provides for embodiment 1;
The regional area sketch map of the net that is adopted in the preparation process of the cheque paper that Fig. 2 provides for embodiment 1;
Fig. 3 is that the A-A of Fig. 2 is to cross sectional view;
The Overlay sketch map of safety line and bright layer plain boiled water seal in the cheque paper that Fig. 4 provides for embodiment 2;
The regional area sketch map of the net that is adopted in the preparation process of the cheque paper that Fig. 5 provides for embodiment 2;
Fig. 6 is that the A-A of Fig. 5 is to cross sectional view;
The Overlay sketch map of safety line and bright layer plain boiled water seal in the cheque paper that Fig. 7 provides for embodiment 3;
The regional area sketch map of the net that is adopted in the preparation process of the cheque paper that Fig. 8 provides for embodiment 3;
Fig. 9 is that the A-A of Fig. 8 is to cross sectional view;
Figure 10 is that the A-A of Fig. 7 is to cross sectional view;
Figure 11 is that the B-B of Fig. 7 is to cross sectional view.
The specific embodiment
To understand in order technical characterictic of the present invention, purpose and beneficial effect being had more clearly, with reference to Figure of description technical scheme of the present invention is carried out following detailed description, but but can not be interpreted as qualification at present practical range of the present invention.
Embodiment 1
Present embodiment provides a kind of cheque paper, and it has the safety line and the bright layer plain boiled water seal of mutual superposition, and wherein, safety line is narrower than the pattern of bright layer plain boiled water seal and from the pattern of bright layer plain boiled water seal, passes, and is as shown in Figure 1.
This cheque paper prepares according to following steps:
Pattern according to bright layer plain boiled water seal makes the watermark matrix, and wherein, the edge of each pattern unit adopts sheet metal, and the mid portion of pattern unit adopts the wire netting sheet;
It is online that the watermark matrix is welded on watermark, makes net, and Fig. 2 is the regional area sketch map of net, Fig. 3 be the A-A of Fig. 2 to view, i.e. the sectional view of net regional area;
With the net tensioner on rotary screen cage; Rotary screen cage is placed on the paper machine manufactures paper with pulp, in the process of manufacturing paper with pulp, safety line is applied to the presumptive area in the bright layer white watermark pattern with the mode of windowing; Safety line and bright layer plain boiled water seal are superimposed, obtain the cheque paper of present embodiment.
In the cheque paper that present embodiment provided, bright layer plain boiled water seal can demonstrate good watermark effect, and is more clear than the watermark of routine, is easy to popular identification; Safety line is present in this cheque paper with the mode of windowing; And; Safety line is positioned at bright layer white watermark pattern zone, and the pattern that prints with bright layer plain boiled water combines well, wherein; Safety line and the overlapping part of bright layer white watermark pattern are exposed to paper with the window of windowing, and other parts are then imbedded in the paper.
Embodiment 2
Present embodiment provides a kind of cheque paper; It has the safety line and the bright layer plain boiled water seal of mutual superposition; Wherein, safety line is wider than the pattern of bright layer plain boiled water seal, and the pattern of bright layer plain boiled water seal is the rhombus of repeated arrangement; Within the scope that all bright layer plain boiled water seals all are positioned at safety line and are covered, as shown in Figure 4.
This cheque paper prepares according to following steps:
Pattern according to bright layer plain boiled water seal makes the watermark matrix, and wherein, the edge of each pattern unit adopts sheet metal, and the mid portion of pattern unit adopts the wire netting sheet;
It is online that the watermark matrix is welded on watermark, makes net, and Fig. 5 is the regional area sketch map of net, Fig. 6 be the A-A of Fig. 5 to view, i.e. the sectional view of net regional area;
With the net tensioner on rotary screen cage; Rotary screen cage is placed on the paper machine manufactures paper with pulp, in the process of manufacturing paper with pulp, safety line is applied to the presumptive area in the bright layer white watermark pattern with the mode of windowing; Safety line and bright layer plain boiled water seal are superimposed, obtain the cheque paper of present embodiment.
In the cheque paper that present embodiment provided, bright layer plain boiled water seal can embody good watermark effect, and is more clear than the watermark of routine, is easy to popular identification; Safety line is present in this cheque paper with the mode of windowing; And bright layer white watermark pattern is positioned at the zone that is provided with safety line, and the pattern that prints with bright layer plain boiled water combines well; Wherein, The overlapping part of safety line and bright layer white watermark pattern is exposed to paper with the window (this window is a rhombus, promptly bright layer white watermark pattern) of windowing, and other parts are then imbedded in the paper.
Embodiment 3
Present embodiment provides a kind of cheque paper; It has the safety line and the bright layer plain boiled water seal of mutual superposition; Wherein, safety line is wider than the pattern of bright layer plain boiled water seal, and the pattern of bright layer plain boiled water seal is the triangle of repeated arrangement; Within the scope that all bright layer plain boiled water seals all are positioned at safety line and are covered, as shown in Figure 7.
This cheque paper prepares according to following steps:
Pattern according to bright layer plain boiled water seal makes the watermark matrix, and wherein, the edge of each pattern unit adopts sheet metal, and the mid portion of pattern unit adopts the wire netting sheet;
It is online that the watermark matrix is welded on watermark, makes net, and Fig. 8 is the regional area sketch map of net, Fig. 9 be the A-A of Fig. 8 to view, i.e. the sectional view of net regional area;
With the net tensioner on rotary screen cage; Rotary screen cage is placed on the paper machine manufactures paper with pulp, in the process of manufacturing paper with pulp, safety line is applied to the presumptive area in the bright layer white watermark pattern with the mode of windowing; Safety line and bright layer plain boiled water seal are superimposed, obtain the cheque paper of present embodiment.
In the cheque paper that present embodiment provided, bright layer plain boiled water seal can embody good watermark effect, and is more clear than the watermark of routine, is easy to popular identification; Safety line is present in this cheque paper with the mode of windowing; And bright layer white watermark pattern is positioned at the safety line region covered, and the pattern that prints with bright layer plain boiled water combines well; Wherein, The overlapping part of safety line and bright layer white watermark pattern is exposed to paper with the window (this window is a triangle, promptly bright layer white watermark pattern) of windowing, and other parts are then imbedded in the paper.
Figure 10 for the A-A that is respectively Fig. 7 with Figure 11 to cross sectional view and B-B to cross sectional view.In Figure 10 and Figure 11; What dash area was represented is safety line, as can be seen from the figure, and in zone (being bright layer plain boiled water seal and the overlapping part of safety line) with bright layer plain boiled water seal; Safety line can be exposed paper; Make people can observe safety line, and in the zone that does not have bright layer plain boiled water seal, safety line is then imbedded among the page.
It is compound with the safety line mutual superposition that cheque paper provided by the invention has realized having the bright layer plain boiled water seal of good watermark effect, and its anti-counterfeiting characteristic is easy to popular identification, and is difficult to imitation.

Claims (10)

1. a bright layer plain boiled water prints and the integrated cheque paper of opened window safety line, and wherein, this cheque paper has the bright layer plain boiled water seal and the safety line of mutual superposition, and said safety line forms the effect of windowing.
2. cheque paper according to claim 1, wherein, said safety line is narrower than the pattern of said bright layer plain boiled water seal, and said safety line is passed from the pattern of said bright layer plain boiled water seal.
3. cheque paper according to claim 1, wherein, said safety line is wider than the pattern of said bright layer plain boiled water seal, and said safety line covers the pattern of said bright layer plain boiled water seal.
4. cheque paper according to claim 1, wherein, the effect of windowing of said safety line is to form as the version of windowing through the watermark matrix with bright layer plain boiled water seal.
5. the preparation method of the integrated cheque paper of each described bright layer plain boiled water seal of claim 1-4 and opened window safety line, it may further comprise the steps:
Pattern according to bright layer plain boiled water seal makes the watermark matrix;
With watermark matrix welding or to be bonded in watermark online, make net;
With the net tensioner on rotary screen cage; Rotary screen cage is placed on the paper machine manufactures paper with pulp, in the process of manufacturing paper with pulp, safety line is applied to presumptive area with the mode of windowing; Safety line and bright layer plain boiled water seal are superimposed, prepare the said cheque paper that contains bright layer plain boiled water seal and safety line.
6. preparation method according to claim 5, wherein, said watermark matrix is sheet metal and/or wire netting sheet.
7. preparation method according to claim 6, wherein, said sheet metal and wire netting sheet are processed by copper or stainless steel.
8. preparation method according to claim 6, wherein, the mesh of said wire netting sheet is the 8-90 order.
9. according to claim 6 or 8 described preparation methods, wherein, the width of said wire netting sheet is 1-29mm.
10. preparation method according to claim 5, wherein, said safety line dispensing is provided with the zone of watermark matrix on net.
CN201210061865.XA 2012-03-09 2012-03-09 Anti-counterfeiting paper integrating bright-layer white watermark with windowing safety line and preparation method thereof Expired - Fee Related CN102587216B (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102926280A (en) * 2012-10-25 2013-02-13 成都印钞有限公司 Windowing zebra crossing white watermark anti-counterfeit technology and anti-counterfeit paper made by using same
CN103015248A (en) * 2013-01-10 2013-04-03 保定钞票纸业有限公司 Anti-counterfeiting paper comprising watermark combination with bright window and method for manufacturing anti-counterfeiting paper
CN104631211A (en) * 2015-01-16 2015-05-20 成都印钞有限公司 Window-opening cylinder mould for producing vertical window-opening anti-counterfeit paper and process for producing profile vertical window-opening anti-counterfeit paper
CN105525532A (en) * 2015-12-04 2016-04-27 成都印钞有限公司 Anti-counterfeit paper with security line provided with staggered windows and mesh cage used for making same
CN105620081A (en) * 2016-01-05 2016-06-01 中钞实业有限公司 Production method of ultrawide safety line security paper and production equipment
CN106978766A (en) * 2017-04-18 2017-07-25 保定钞票纸业有限公司 A kind of cheque paper with standard-sized sheet window safety line and preparation method thereof
CN108547177A (en) * 2018-05-11 2018-09-18 天津中钞纸业有限公司 Manufacturing method for the black water-mark fake-proof paper of internet pressure network Quick Response Code
CN110910779A (en) * 2019-12-20 2020-03-24 广州视源电子科技股份有限公司 LED display screen
CN111231493A (en) * 2019-12-13 2020-06-05 成都印钞有限公司 Paper forming die, die manufacturing method and paper manufactured by forming die

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CN1563576A (en) * 2004-04-08 2005-01-12 中国印钞造币总公司 Antiflase paper having windowing save line and superposed watermarks and fabrication method
CN1734018A (en) * 2004-08-11 2006-02-15 中国印钞造币总公司 Bar code white watermark antifalsification paper and its preparation method and watermark cylinder mould

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CN1181796A (en) * 1996-03-12 1998-05-13 特种制纸株式会社 Forgery preventive sheet and method of mfg. same
JP2000256995A (en) * 1999-03-11 2000-09-19 Toppan Printing Co Ltd Paper for securities and securities
CN1563576A (en) * 2004-04-08 2005-01-12 中国印钞造币总公司 Antiflase paper having windowing save line and superposed watermarks and fabrication method
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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102926280A (en) * 2012-10-25 2013-02-13 成都印钞有限公司 Windowing zebra crossing white watermark anti-counterfeit technology and anti-counterfeit paper made by using same
CN102926280B (en) * 2012-10-25 2014-11-05 成都印钞有限公司 Windowing zebra crossing white watermark anti-counterfeit technology and anti-counterfeit paper made by using same
CN103015248A (en) * 2013-01-10 2013-04-03 保定钞票纸业有限公司 Anti-counterfeiting paper comprising watermark combination with bright window and method for manufacturing anti-counterfeiting paper
CN103015248B (en) * 2013-01-10 2015-03-18 保定钞票纸业有限公司 Anti-counterfeiting paper comprising watermark combination with bright window and method for manufacturing anti-counterfeiting paper
CN104631211A (en) * 2015-01-16 2015-05-20 成都印钞有限公司 Window-opening cylinder mould for producing vertical window-opening anti-counterfeit paper and process for producing profile vertical window-opening anti-counterfeit paper
CN105525532A (en) * 2015-12-04 2016-04-27 成都印钞有限公司 Anti-counterfeit paper with security line provided with staggered windows and mesh cage used for making same
CN105620081A (en) * 2016-01-05 2016-06-01 中钞实业有限公司 Production method of ultrawide safety line security paper and production equipment
CN106978766A (en) * 2017-04-18 2017-07-25 保定钞票纸业有限公司 A kind of cheque paper with standard-sized sheet window safety line and preparation method thereof
CN106978766B (en) * 2017-04-18 2019-03-08 保定钞票纸业有限公司 A kind of anti-counterfeiting paper and preparation method thereof with standard-sized sheet window safety line
CN108547177A (en) * 2018-05-11 2018-09-18 天津中钞纸业有限公司 Manufacturing method for the black water-mark fake-proof paper of internet pressure network Quick Response Code
CN111231493A (en) * 2019-12-13 2020-06-05 成都印钞有限公司 Paper forming die, die manufacturing method and paper manufactured by forming die
JP2023505346A (en) * 2019-12-13 2023-02-08 成都印鈔有限公司 Paper molding mold, mold manufacturing method, and paper manufactured with molding mold
CN110910779A (en) * 2019-12-20 2020-03-24 广州视源电子科技股份有限公司 LED display screen

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